Do not have newlines depend on environment
According to https://github.com/b/statsd_spec the spec is just a
newline
Update UdpListener to be able to listen for multiple messages

Conflicts:
	src/Tests/MetricIntegrationTests.cs
Add splitting of oversized UDP packets containing multiple metrics

Conflicts:
	src/Tests/StatsdClient.Tests.csproj
	src/Tests/UdpListener.cs
Fix StatsdUDP test to pass on all platforms
Add ability to set maximum UDP packet size.
Default is 512
Merge branch 'DataDog-udp-size-limit-upstream'

Conflicts:
	src/Tests/MetricIntegrationTests.cs